Surface behaviour of the pairing gap in semi-infinite nuclear matter

The S-1(0)-pairing gap in semi-infinite nuclear matter is evaluated microsc opically using the effective pairing interaction recently derived in the co ordinate representation from a separable form of the Paris NN-potential. In stead of a direct iterative solution of the gap equation, a new method prop osed by V. A. Khodel, V. V. Khodel and J. W. Clark was used which simplifie s the procedure significantly. The gap Delta obtained in our calculations e xhibits a strong variation in the surface region with a pronounced maximum near the surface. (C) 1999 Published by Elsevier Science B.V. All rights re served.